| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 14 |
7%
|
| 0 | 2 |
1%
|
|
| 1 | 19 |
9.5%
|
|
| 2 | 29 |
14.6%
|
|
| 3 | 4 |
2%
|
|
| 4 | 49 |
24.6%
|
|
| 5 | 3 |
1.5%
|
|
| 6 | 11 |
5.5%
|
|
| 7 | 2 |
1%
|
|
| 8 | 32 |
16.1%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 3 |
1.5%
|
|
| 12 | 15 |
7.5%
|
|
| 15 | 1 |
0.5%
|
|
| 16 | 7 |
3.5%
|
|
| 20 | 1 |
0.5%
|
|
| 24 | 4 |
2%
|
|
| 27 | 1 |
0.5%
|
|
| 48 | 1 |
0.5%
|
|
| Sysmiss | 146 |